
def replace_test():
    s1 = "aaa.bbb"
    s2 = s1.replace(".", "_")
    print(s1, s2)


def str_cmp_test():
    print("140000" < "095600")
    print("095400" < "095600")


def list_str_test():
    list1 = ["a", "b", "c"]
    print(str(list1))
    print(".".join(list1))
    list2 = []
    print(str(list2))
    print(".".join(list2))
    s1 = "a,b,c"
    s2 = ""
    print(list(s1.split(",")))
    print(list(s2.split(",")))


def lower_test():
    s = "ABC"
    b = "ABC123"
    print(s.lower())
    print(b.lower())


def split_test():
    a = "a.b_c_d"
    print(a.split("_",1))


if __name__ == '__main__':
    #replace_test()
    #str_cmp_test()
    #list_str_test()
    #lower_test()
    split_test()

